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This robot destacks blanks and feed them to a
bending machine. During destacking the robot moves the sheet between two dual- head
sensors. If the robot vacum cup gripper has picked up 2 sheet instaed of only one, a
contact in the double sheet detector amplifier switches. This contact controlls the robot
to repeat the destacking process again and again, till the double sheets are removed /
shaked off from each other or, if this is without sucsess, places the double sheets
in a separtat double sheet bin/ stack.
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